-Translation- AIS-CP 011/2005 February 2, 2005 Subject: Report on the results of the exercise of warrants (ESOP Grant I and II) in January 2005. To: The President The Stock Exchange of Thailand Advanced Info Service Public Company Limited ("the Company") issued and offered the warrants to purchase the Company's ordinary shares to directors and employees of the Company (ESOP).The details of Warrants are as follows: Details ESOP Grant I ESOP Grant II The number of warrants 14,000,000 Units 8,467,200 Units Issue Date March 27,2002 May 30,2003 Exercise Price Baht 47.147 per share Baht 42.634 per share Exercise Ratio 1 warrant per 1.01751 ordinary shares Maturity of Warrants 5 years from the first date of the issuance and offering of warrants The Company would like to report the results of the exercise of warrants (ESOP Grant I and II) in January 2005, as follows: Details ESOP Grant I ESOP Grant II The number of exercised warrants in this month 60,000 units 315,500 units The number of remaining unexercised warrants 5,604,500 units 6,130,500 units The number of ordinary shares derived from this exercise 61,050 shares 321,023 shares The number of remaining ordinary shares reserved for warrants 5,626,154 shares 6,143,743 shares Please be informed accordingly. Yours sincerely, -Signed- Mrs. Siripen Sitasuwan Director Advanced Info Service Public Company Limited